<template>

    <div class="app-container">
  
      <h2 style="text-align: center;">发布新课程</h2>
  
      <el-steps :active="3" process-status="wait" align-center style="margin-bottom: 40px;">
        <el-step title="填写课程基本信息"/>
        <el-step title="创建课程大纲"/>
        <el-step title="提交审核"/>
      </el-steps>
  
      <div class="ccInfo">
        <img :src="coursePublish.cover">
        <div class="main">
          <h2>{{ coursePublish.title }}</h2>
          <p class="gray"><span>共{{ coursePublish.lessonNum }}小节</span></p>
          <p><span>所属分类：{{ coursePublish.subjectLevelOne }} — {{ coursePublish.subjectLevelTwo }}</span></p>
          <p>课程讲师：{{ coursePublish.teacherName }}</p>
          <h3 class="red">￥{{ coursePublish.price }}</h3>
        </div>
      </div>
      <div>
        <el-button @click="previous">返回修改</el-button>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">发布课程</el-button>
      </div>
    </div>
  </template>
  <script>
  import course from '@/api/edu/course'
  export default {
    data() {
      return {
        saveBtnDisabled: false,
        courseId: '',
        coursePublish: {}
      }
    },
    created() {
      // 获取路由中的课程id
      if (this.$route.params && this.$route.params.id) {
        this.courseId = this.$route.params.id
      }
      // 调用方法:根据课程id查询课程具体信息
      this.getCoursePublishId()
    },
    methods: {
      // 根据课程id查询课程具体信息
      getCoursePublishId() {
        // 调用api中的方法
        course.getPublishCourseInfo(this.courseId)
          .then(response => {
            this.coursePublish = response.data.publishCourse
          })
      },
      // 跳转到第二步
      previous() {
        this.$router.push({ path: '/course/chapter/1' })
      },
      // 课程最终发布
      publish() {
        course.publishCourse(this.courseId)
          .then(response => {
            // 提示发布成功
            this.$message({
              type: 'success',
              message: '发布成功!'
            })
            // 跳转到list.vue页面
            this.$router.push({ path: '/course/list' })
          })
      }
    }
  }
  </script>
  
  <style scoped>
  .ccInfo {
      background: #f5f5f5;
      padding: 20px;
      overflow: hidden;
      border: 1px dashed #DDD;
      margin-bottom: 40px;
      position: relative;
  }
  .ccInfo img {
      background: #d6d6d6;
      width: 500px;
      height: 278px;
      display: block;
      float: left;
      border: none;
  }
  .ccInfo .main {
      margin-left: 520px;
  }
  
  .ccInfo .main h2 {
      font-size: 28px;
      margin-bottom: 30px;
      line-height: 1;
      font-weight: normal;
  }
  .ccInfo .main p {
      margin-bottom: 10px;
      word-wrap: break-word;
      line-height: 24px;
      max-height: 48px;
      overflow: hidden;
  }
  
  .ccInfo .main p {
      margin-bottom: 10px;
      word-wrap: break-word;
      line-height: 24px;
      max-height: 48px;
      overflow: hidden;
  }
  .ccInfo .main h3 {
      left: 540px;
      bottom: 20px;
      line-height: 1;
      font-size: 28px;
      color: #d32f24;
      font-weight: normal;
      position: absolute;
  }
  </style>
  